nectarine tree vs Prunus persica nectarina

nectarine tree and Prunus persica nectarina both are nouns.

Word	Noun	Adjective	Verb	Adverb
nectarine tree	Yes	No	No	No
Prunus persica nectarina	Yes	No	No	No

As nouns, nectarine tree and Prunus persica nectarina are synonyms defined as:

nectarine tree and Prunus persica nectarina: variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh

Other synonyms of nectarine tree include nectarine.

nectarine tree (noun)	Prunus persica nectarina (noun)
variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh	variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh